Electric battery.



s. YAi. ELECTRIC BATTERY. APPLICATION FILED MAY 21, 1903.

PATENTED 11130.8, 1903.v

H0 MODEL.

Inventor.

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30 formed of blotting or similar paper. The an- Patented December 8, 1903.

'ATENT ()FFIQE.

SAKIZO YAI, OF TOKIO, JAPAN.

ELECTRIC BATTERY.

SPECIFICATION formingpart of Letters Patent No. 746.227, dated Dece b 1903- Applioation filed May 21, 1903.

To all whom it mag roman.-

Be it known that I, SAKIZO YAI, a subject of'the Emperor of' Japan, residing at No. 21 Nishikuromon street, Shitaya-Ku, in the city of Tokio, Japan, have invented certain new and useful Improvements in Electric Batteries, of which the following is a specification.

The invention relates more particularly to a battery which may be used either as a primary or secondary cell; and its objects are to In' the accompanying drawings, Figure 1 isa perspective View of a attery ibodying this invention. Fig. is a cross-section of thesaine.

A casing a of any desired form is made of zinc or lead plate. As shown in the drawings, this casing is cylindrical and is provided with an interior porous cylinder b, preferably nular space between the cylinders 11 and b is i filled with zinc oxid, (designated by 0,) while the cylinder b is filled with a mixture of manganese oxid and graphite powder, (designated by d.) In the center of the cylinder bis fixed a carbon or graphite rod 6. The cover of the casing or vessel is provided with an inletopening it, through which a'solution of canstic potassium is next poured in. Bindingposts f and g are secured to the negative and positive poles.

Electricity is generatedin this improved battery by the chemical action of the caustic When used as an accumulator, the current- Serial No- J. 58,217- (No model.)

introduced reduces the oxid of zinc or lead to a spongy condition, while the oxygen acts on the manganese compound and converts it into a higher oxid. When the current is discharged, the reverse action occurs. During this action more or less corrosion of the zinc or lead plate is unavoidable; but repeated comparative experiments made with several metallic plates and other substances showed that those which do not corrode have lower electric pressure. Experime ts made with silver or silver plate gave good results; but the price prohibits its use for commercial purposes.

When this device is used as a primarycell or battery, its operation is similar to that of a Leclanch cell, and it is therefore adapted to be usedfor telephones, electric bells, (lac. When used as an accumulator, itis found to have a threefold power as compared with lead-oxid accumulators, as hitherto used. For instance, when the density of the electric current of a lead-oxid accumulator is considered at sixty, the density of the current produced by this accm'ulator will be one hundred and eighty. When the capacity of this battery is made about sixteen centimeters seven millimeters multiplied by seven centimeters six millimeters, the voltage given is almost 1.5 volts, with a current of ten amperes, the current being increased in proportion with the increase in the capacity of the battery.

As will be readily seen, the construction of this battery is exceedingly simple, and it can be made much smaller than those now in use to give the same results. Being entirely in-' closed, it is convenient for transportation,and the batteries can be made up and kept indefinitely by not adding the solution of canstic potassium until ready for use. In this way no deterioriation will occur' in the battery from lapse of time, as occurs in the common dry batteries.

Having thus described my invention,which,

however, I do notwish to limit to the -ct form shown, what I claim, and desire cure by Letters Patent, is

. In an electric battery, the combinat a negative element comprising a. carbon rod In testimony whereof I affix my signature surrounded by a. mixture of graphite powder in presence of two witnesses. and manganese oxid, a positive element comprising a zinc plate surrounded by zinc oxid, SAKIZO aporous separator between said elements and Witnesses: a solution of caustic potassium substantially R. S. MILLER,

as described. M. ERKI. 

